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authorChristian Tismer <ctismer@gmail.com>2015-06-20 16:41:54 +0200
committerChristian Tismer <ctismer@gmail.com>2015-06-20 16:51:49 +0200
commit1f7743fd21763466c0a3d1db9962bdbd04f258b8 (patch)
treec078542aa60c75f9832fd8e848b3b6780d39c824 /utils.py
parent1dd7855f3c55c8d757341dd1a4b4158e5a6553ba (diff)
Remove the need to use the post-install script on Mac OS platform and update the docs.
Diffstat (limited to 'utils.py')
-rw-r--r--utils.py138
1 files changed, 137 insertions, 1 deletions
diff --git a/utils.py b/utils.py
index 7b40bb2a..a1634a13 100644
--- a/utils.py
+++ b/utils.py
@@ -1,5 +1,6 @@
import sys
import os
+import re
import stat
import errno
import time
@@ -233,7 +234,7 @@ def copyfile(src, dst, force=True, vars=None):
log.info("Copying file %s to %s." % (src, dst))
shutil.copy2(src, dst)
-
+
return dst
@@ -450,3 +451,138 @@ def regenerate_qt_resources(src, pyside_rcc_path, pyside_rcc_options):
run_process([pyside_rcc_path,
pyside_rcc_options,
srcname, '-o', dstname])
+
+
+def back_tick(cmd, ret_err=False):
+ """ Run command `cmd`, return stdout, or stdout, stderr if `ret_err`
+
+ Roughly equivalent to ``check_output`` in Python 2.7
+
+ Parameters
+ ----------
+ cmd : str
+ command to execute
+ ret_err : bool, optional
+ If True, return stderr in addition to stdout. If False, just return
+ stdout
+
+ Returns
+ -------
+ out : str or tuple
+ If `ret_err` is False, return stripped string containing stdout from
+ `cmd`. If `ret_err` is True, return tuple of (stdout, stderr) where
+ ``stdout`` is the stripped stdout, and ``stderr`` is the stripped
+ stderr.
+
+ Raises
+ ------
+ Raises RuntimeError if command returns non-zero exit code
+ """
+ proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
+ out, err = proc.communicate()
+ if not isinstance(out, str):
+ # python 3
+ out = out.decode()
+ err = err.decode()
+ retcode = proc.returncode
+ if retcode is None:
+ proc.terminate()
+ raise RuntimeError(cmd + ' process did not terminate')
+ if retcode != 0:
+ raise RuntimeError(cmd + ' process returned code %d\n*** %s' %
+ (retcode, err))
+ out = out.strip()
+ if not ret_err:
+ return out
+ return out, err.strip()
+
+
+OSX_OUTNAME_RE = re.compile(r'\(compatibility version [\d.]+, current version '
+ '[\d.]+\)')
+
+def osx_get_install_names(libpath):
+ """ Get OSX library install names from library `libpath` using ``otool``
+
+ Parameters
+ ----------
+ libpath : str
+ path to library
+
+ Returns
+ -------
+ install_names : list of str
+ install names in library `libpath`
+ """
+ out = back_tick('otool -L ' + libpath)
+ libs = [line for line in out.split('\n')][1:]
+ return [OSX_OUTNAME_RE.sub('', lib).strip() for lib in libs]
+
+
+OSX_RPATH_RE = re.compile(r"path (.+) \(offset \d+\)")
+
+def osx_get_rpaths(libpath):
+ """ Get rpaths from library `libpath` using ``otool``
+
+ Parameters
+ ----------
+ libpath : str
+ path to library
+
+ Returns
+ -------
+ rpaths : list of str
+ rpath values stored in ``libpath``
+
+ Notes
+ -----
+ See ``man dyld`` for more information on rpaths in libraries
+ """
+ lines = back_tick('otool -l ' + libpath).split('\n')
+ ctr = 0
+ rpaths = []
+ while ctr < len(lines):
+ line = lines[ctr].strip()
+ if line != 'cmd LC_RPATH':
+ ctr += 1
+ continue
+ assert lines[ctr + 1].strip().startswith('cmdsize')
+ rpath_line = lines[ctr + 2].strip()
+ match = OSX_RPATH_RE.match(rpath_line)
+ if match is None:
+ raise RuntimeError('Unexpected path line: ' + rpath_line)
+ rpaths.append(match.groups()[0])
+ ctr += 3
+ return rpaths
+
+
+def osx_localize_libpaths(libpath, local_libs, enc_path=None):
+ """ Set rpaths and install names to load local dynamic libs at run time
+
+ Use ``install_name_tool`` to set relative install names in `libpath` (as
+ named in `local_libs` to be relative to `enc_path`. The default for
+ `enc_path` is the directory containing `libpath`.
+
+ Parameters
+ ----------
+ libpath : str
+ path to library for which to set install names and rpaths
+ local_libs : sequence of str
+ library (install) names that should be considered relative paths
+ enc_path : str, optional
+ path that does or will contain the `libpath` library, and to which the
+ `local_libs` are relative. Defaults to current directory containing
+ `libpath`.
+ """
+ if enc_path is None:
+ enc_path = os.path.abspath(os.path.dirname(libpath))
+ install_names = osx_get_install_names(libpath)
+ need_rpath = False
+ for install_name in install_names:
+ if install_name[0] in '/@':
+ continue
+ back_tick('install_name_tool -change %s @rpath/%s %s' %
+ (install_name, install_name, libpath))
+ need_rpath = True
+ if need_rpath and enc_path not in osx_get_rpaths(libpath):
+ back_tick('install_name_tool -add_rpath %s %s' %
+ (enc_path, libpath))